Valve mechanism.



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Patented Mar. 9, 1909.

Wit" @osea UNITED STATES PATENT oEEIoE.

- i-,AECHEY WILLIAM WILKEY, or GmEoN, MISSOURI.

VALVE MECHANISM.

-To all whom it may concern:

Be it known that I, ARCHEY W. WILEEY, a

citizen of the United States, residing at Gideon, in the county of New Madrid and State of Missouri, have invented a certain new and usefullmprovement in Valve Mechanism; and I do hereby declare the following to be a full, clear, and exact description ofthe invention, such as will enable othersl skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the letters and figures of reference marked thereon, which forma part of this specification. 15

This invention relates to new and useful Improvements. In steam valve apparatus and com rlses various detalls of construction,

com inations and arrangements of arts bwhich will be hereinafter fully describe and then specifically defined in the -appended claim. A

My invention is illustrated in the accompanying drawings,'in which Figure 1 is a side elevation of my improved apparatus, arts being shown in section. Flg. 2 is a etail perspective view of .one of the valve casings. Fig. 3 is a detail view of a valve casing with two of the Ysides removed. Fig. 4 is a cross sectional view on vline 4-4 of Fig. 2. Fig. 5is a section on line 5-5 of Fig. 4 Fig. 6 is an enlarged de- 'tail perspective view of the rock valve, and

Fig. 7- is Va cross sectional view online 7--7 of eferen'ce now being had to the detailsof the drawings by letter, A designates a cylinder which may be of any length and provided with cylinder heads A and -pipes B leading through each c linder head, through which to enter or exhaust from the cylinder.

C designates a piston mounted within the cylinder and C 1s a piston rod connected thereto.

Two valve chamber boxings D--D arey provided which are of similar construction, enlarged detail views of which are shown in Figs. 2 to 5 inclusive. Said valve casing is chambered, as at D', the bottom of said chambered portion being concaved, and E designates a rockvalve of cylindrical shape conforming to and resting u on the bottom of said chamber, as shown c early in Figs. 3 and 4 of the drawings. The under ortion of the valve casing has two chambers, and F',

- Specification of Letters Patent.

p lApplication led March 6, 1908. Serial No. 419,509.

Patented March 9, 1909.

in its circumference, 'as shown clearly in" Fig. 6 of the drawings. A port F2 is formed in the conca-ved end wall of said chamber, communicates with the pipe B and ports I-I lead,tl'=.rough into the chambers F and F. Leading from the chamber F is a pipe K through. which steam exhausts from the valve boxing, and N designates a steamsupply pipe which leads through the pipe from any source of supplyto the chamber F, whereby steam may be supplied for driving the piston C.

One end of the valve E has transverse slot E formed therein, which is referably dovetailed and is adapted to receive the head O of a valve stem O', said head having a sliding dove-tailed connection in the slot E for the purpose of allowing the valve to settle slightly to compensate for wear and still form means to enable the valve to be rocked upon its bearing. The outer end of the valve stem O is threaded as at O2 and is adapted to hold a link R connected to said stem, while the other end of the link is pivotally connected to the bifurcated end of a bar S. Said bar S is connected to the valve in the two boxings, as shown in Fig. 1 of the drawings, and T is an operating lever mounted upon a pivot T',

' said lever. having a slot T2 to receive a m J upon the befr S, thereby allowing a. s ght lay as the lever is tilted upon its ivot. Said valve boxings are provlded wit the removable sides, designated in the drawings by letters I and I2, which are held to the boxing by means of screws, as shown in Fig. 2 ofthe drawings.

From the foregoing, it willbe noted that, by the provision of the apparatus shown and described, a simple an eflicient means is aforded for giving a piston stem in the c linder a reciprocating movement designe Iespecially for operating saw-mill carriages and the like. B rocking the lever upon its pivot, the va ves4 within said boxings may be rocked in such a manner that steam may be alternatel admitted to the opposite ends of the cylin "er, one valve being so positioned that exhaust will take place at one end of the cylinder while live steam is admitted at the other and vice versa as the lever -is rocked in the other direction. By the provision of the rock valve having the connection as set forth.

with the stem7 means is afforded for taking up any wear which might take place intermediate the 'valve and its seat.

What I claim to be new is l In combination with a valve easing having a ehambered portion, the bottom of which is ooneaved and provided with ports therein, a cylinder, a piston therein, pipe connections between the cylinder and easing, a valve Within said easing, the end of said valve'being provided with a transverse recess, a stem 

